The technology, which measures a driver’s ability to drive in a more efficient manner, has achieved the saving in just nine months after being introduced in February 2010.
The free application can be downloaded to all Fiat cars fitted with the Blue&Me system and helps drivers measure acceleration, deceleration, gear shifts and speed.
This allows the driver to his or her driving style to reduce fuel consumption and subsequent CO2 emissions.
Fiat estimates 50,000 Fiat owners have downloaded the application, equating to 3,500 tons of CO2 emissions.
The technology is available on all Fiat cars, from the small 500 and 500C city cars through the Punto hatchback to the larger Qubo and Doblo people carriers.
Fiat has also made the technology available for its van users to help businesses and fleet operators assess and reduce driving costs.
Fiat is currently one of three manufacturers in Europe to boast average CO2 emissions across its entire range of less than 130g/km.
The figure is significant because by 2013, all manufacturers will be required to be below the 130g/km mark under EU legislation.
Fiat has showcased the eco:Drive technology in a Europe-wide competition to find the most efficient driver on the continent to celebrate its introduction into the Fiat vehicle range.
The winner, Italian Luca Martinello, won a Fiat 500 TwinAir successfully recorded the highest efficiency score taking into account all four measurements the technology records over a 22km ‘race’ in Bologna.
He defeated drivers from other European countries, including the UK, to take the overall title of ‘best eco-driver in Europe’.